Question

Find the circumference of a circle whose diameter is 4.2 cm

Answer 1

Answer:

Step-by-step explanation:

D = 4.2 , r=4.2/2 = 2.1

Circumference = 2pie r

= 2×22/7×2.1

= 44×2.1 / 7

=13.2cm

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Answer 2

Answer:

Step-by-step explanation:

d = 4.2 then r = 2.1

Circumference = 2(pi) r

2 x 22/7 x 2.1

= 66/5 = 13.2 cm

Circumference = 13.2 cm